1.rail line 铁路线
例句:More than 1,000 workers were repairing the damaged rail line, but it was unknown when traffic would resume.
一千多名铁路工人正在抢救破坏的铁路线,但是铁路何时恢复运输尚未可知 。
2.test line 测试线,测试线路
例句:The connection to the 101 test line is established through the switching network.
与101测试线的连接是通过交换网络来建立的 。
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